Lionel Messi is one of 55 soccer superstars featured in Bruno Pisano's book, "My Son The Soccer Player: The Secrets of the World's Greatest Players as Told by Their Parents." In this excerpt, Pisano spoke with Jorge Messi about his son's early years.

American sports icon Mia Hamm debuted for the U.S. national team at age 15 in 1987. She helped the USA to two World Cup and two Olympic titles. The 158 national team goals she scored before retiring in 2004 remain a world record. We asked Hamm to reflect on her early years and offer advice for coaches, parents and young players.

Abuse from the sideline is a very sad component of some youth soccer games. Many soccer refs quit during their first two years of officiating with verbal abuse from the touchline being the No. 1 reason for quitting.

Specialization is common and accepted in most professions. At some point in time Albert Einstein probably decided to focus on theoretical physics, Tom Brady focused on football rather than baseball, and Yo-Yo Ma chose the cello over the double-bass. The world is better for their decision.

Spending soccer time in other countries is always an education in itself. Whether it has been England, Spain, Portugal, Russia, Mexico, or Brazil there are things I learn that always contributes to my continued education about this beautiful game.